QT1100A-IS

Overview

The QT110A-ISG is a single-channel capacitive touch and proximity sensor IC from Microchip Technology's QProx series. It operates on a supply voltage of 2.5V to 5.5V with a typical supply current of 26µA. The device features an 8-bit resolution and supports button input types. It is housed in an 8-SOIC package (3.90mm width) designed for surface-mount installation. The component functions within a temperature range of -40°C to 85°C and includes proximity detection capabilities. It complies with RoHS3 standards and has an MSL rating of 1.

Feature Summary

• Capacitive sensing technology for touch and proximity detection
• Single-channel configuration optimized for button interfaces
• Low-power operation suitable for battery-constrained applications

Applications

• Consumer electronics touch interfaces
• Industrial control panel buttons
• Appliance user interface inputs

Procurement Notes

Verify the exact part number suffix, as the provided data references QT110A-ISG. Confirm end-of-life status and availability through authorized distributors. Check for alternative packages or updated revisions if the specific variant is discontinued. Ensure compliance with current environmental regulations such as RoHS3 before procurement.

Selection Notes

Select this component for designs requiring a single capacitive touch input with proximity sensing. Compare against the QT111-IS for higher 14-bit resolution requirements. Ensure the PCB layout accommodates the 8-SOIC footprint. Verify that the system power supply remains within the 2.5V to 5.5V operating range.

Part Context

This IC belongs to the QProx family of sensors. It serves as a dedicated solution for simple touch applications. The device integrates necessary signal processing for capacitive detection. It is distinct from development tools like the DV102012 kit.

Replacement Considerations

The QT111-IS offers similar functionality but with 14-bit resolution. Verify pin compatibility and software register differences when substituting. Check datasheet updates for any changes in electrical characteristics between variants.